
Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

ejabberd is a robust, scalable messaging platform built on Erlang/OTP that supports multiple protocols for real-time communication. It serves as an XMPP server, MQTT broker, and SIP service, making it suitable for enterprise messaging, IoT communication, and unified communications deployments.
ejabberd is designed for organizations and developers who need a self-hosted, open-source messaging platform with enterprise-grade scalability and support for multiple communication protocols. It suits companies requiring full control over their communication infrastructure and those building large-scale IoT or messaging applications.

The Secure CommsOS™ for mission-critical operations

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Huly — All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion)

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

A customizable life embetterment robot.

🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.

:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

Infisical is the open-source platform for secrets, certificates, and privileged access management.

A self hosted virtual browser that runs in docker and uses WebRTC.

Weighs the soul of incoming HTTP requests to stop AI crawlers

Kodi is an award-winning free and open source home theater/media center software and entertainment hub for digital media. With its beautiful interface and powerful skinning engine, it's available for Android, BSD, Linux, macOS, iOS, tvOS and Windows.

Ready-to-use Media-over-QUIC / SRT / WebRTC / RTSP / RTMP / LL-HLS / MPEG-TS / RTP live media server and media proxy that allows to read, publish, proxy, record and playback real-time video and audio streams.

Free and Open Source Machine Translation API. Self-hosted, offline capable and easy to setup.

ActivityPub-federated video streaming platform using P2P directly in your web browser

Style and Grammar Checker for 25+ Languages